Disclosed is a plant lamp convenient to disassemble, assemble and maintain, including a shell, a placement partition board installed in the shell, an LED lamp board connected with the placement partition board and a power supply, wherein the shell includes a surface cover, middle shell and bottom cover, connected by screws to form a closed installation cavity； a supporting rack is arranged on a bottom surface of the placement partition board； the placement partition board is placed on the bottom cover, the lower surface thereof is provided with the power supply, the top face thereof is provided with an aluminum cooling plate, and an LED lamp panel is connected to an upper surface of the aluminum cooling plate； and the power supply includes a plurality of independent closed storage batteries connected in parallel, and is connected with the placement partition board, and further with a power switch and socket.
